Cornyn: No comment on NRSC's apparent about-face on Akin

12/11/12 12:11 PM EST

Texas Sen. John Cornyn won't say why the National Republican Senatorial Committee dumped cash into Missouri just before the election in an apparent attempt to boost Rep. Todd Akin's struggling candidacy, despite publicly promising not to do so.

"I don't have any comment on it," Cornyn told POLITICO on Tuesday.

Late last week, campaign finance reports showed the NRSC transferred $760,000 to the Missouri Republican Party on the eve of the November election. The NRSC money came just as the Missouri GOP was pumping cash into a last-ditch ad campaign to boost Akin against Sen. Claire McCaskill, who later won by 15 points.

Democrats have bashed the NRSC for spending money in Missouri even though Cornyn and top Republicans promised to abandon Akin after his controversial "legitimate rape" comment sent his campaign into a tailspin.